The present invention relates to a vacuum pump using a profile. The vacuum pump according to the present invention comprises: a hollow profile having a longitudinal mounting hole and a vacuum chamber formed adjacent to each other; an ejector pump arranged inside the mounting hole in the longitudinal direction; and end caps provided in both openings of the profile, respectively, so as to have a through-hole formed therein so as to correspond to the inflow opening or the discharge opening. Particularly, the first cap near the inflow opening is designed to have a passage through which the vacuum chamber and the mounting hole communicate with each other. The vacuum pump structure according to the present invention is considered to be a vacuum pump structure using at least a so-called “profile” best designed to make fabrication of the vacuum pump convenient and to improve vacuum characteristics.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A vacuum pump using a profile, the vacuum pump comprising: a hollow extruded profile ( 20 ) provided with a mounting hole ( 21 ) at an upper portion of the profile and a vacuum chamber ( 22 ) at a lower portion of the profile being in parallel to each other in a longitudinal axes direction of the profile to be adjacent to each other, with a side of the vacuum chamber formed with a plurality of communication holes ( 23 ) communicating with a suction means ( 50 ); at least one ejector pump ( 30 ) being a cylindrical-type pump configured such that a first end thereof is a compressed air inlet ( 31 ), a second end thereof is a compressed air outlet ( 32 ), and at least one through-hole ( 33 ) is formed in a side wall thereof, and being disposed in the mounting hole ( 21 ) in the longitudinal axes direction and fixed thereto; and end caps ( 40 ) being provided to cover opposite openings of the profile, respectively, including a first cap ( 41 ) and a second cap ( 42 ) formed with through-holes ( 43 and 44 ) corresponding to the compressed air inlet or the compressed air outlet, with the first cap ( 41 ) on an inlet side having an inner passage ( 45 ) communicating the vacuum chamber ( 22 ) and the mounting hole ( 21 ) with each other, wherein the mounting hole ( 21 ) and the vacuum chamber ( 22 ) do not communicate directly with each other, and all air communicated to the mounting hole from the vacuum chamber occurs through the inner passage ( 45 ) of the first cap ( 41 ).
2. The vacuum pump of claim 1 , wherein the first cap ( 41 ) includes an auxiliary chamber ( 46 ) formed at a lower portion of the first cap to be connected with the vacuum chamber ( 22 ), and the inner passage ( 45 ) is formed at a side of the auxiliary chamber ( 46 ).
3. The vacuum pump of claim 2 , wherein the auxiliary chamber ( 46 ) is formed in a surface thereof with a communication hole ( 47 ) communicating with the suction means ( 50 ).
4. The vacuum pump of claim 3 , wherein the suction means ( 50 ) is a pad-type means attached to surfaces of the vacuum chamber ( 22 ) and the auxiliary chamber ( 46 ) with the communication holes ( 23 and 47 ) formed in the surfaces, or is a cup-type means mounted or connected to the communication holes ( 23 and 47 ).
5. The vacuum pump of claim 1 , wherein the ejector pump ( 30 ) includes a ring-shaped fixing portion ( 34 ) provided at an outlet ( 32 ) side end thereof, and the fixing portion ( 34 ) is configured such that an outer circumferential surface thereof is brought into close contact with an inner surface of the mounting hole ( 21 ).
6. The vacuum pump of claim 5 , wherein a surrounding space ( 25 ) surrounding the ejector pump ( 30 ) is formed in a part of the mounting hole ( 21 ) by the fixing portion ( 34 ), and the inner passage ( 45 ) communicates the vacuum chamber ( 22 ) and the surrounding space ( 25 ) with each other.
7. The vacuum pump of claim 5 , wherein the fixing portion ( 34 ) includes a groove ( 37 ) formed on the outer circumferential surface thereof, and a fixing bolt ( 36 ) is passed through a side wall of the profile ( 20 ) such that an end thereof is inserted in the groove ( 37 ).
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 3, 2017
October 19, 2021
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